SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T06:41:28-06:00SparkFun ElectronicsCustomer #102929 on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) Customer #102929urn:uuid:4ab2a297-fe5d-ed4c-0dea-a3ab26f435c22015-11-18T13:01:03-07:00<p>I got the following readings on the 4 I ordered: 0V, 0V, 0.66V, 3.86V. They just let me know that they figured out that all their current stock of this product has been packaged with conductive foam, so these have been slowly discharging on the shelf. I verified this...about 5k ohms resistance across the foam pad the battery came in. Anyway, they should be replacing this with properly packaged product but wait on ordering it -- dated 11/18/2015. Posting this because I noticed they still had it listed as in stock and not on backorder--this should be updated. Also so that if any previous purchaser is wondering what happened, they have some closure. These cells aren't supposed to be allowed to fully discharge.</p>
Customer #382481 on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) Customer #382481urn:uuid:74d4a359-9e5e-0b2a-bb27-1d590bd086622015-10-21T20:03:31-06:00<p>What would be the best way to recharge this battery?</p>
Customer #521591 on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) Customer #521591urn:uuid:96a2a7fd-4ffb-fdeb-2332-d999590807db2015-03-27T15:20:10-06:00<p>Does this battery need an external protection circuit? I believe all the rectangular packs SF sells have them built in. If something external is needed, is there a recommended protection IC or circuit design for this?</p>
Nick Aikens on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) Nick Aikensurn:uuid:7ff24919-43af-2f67-8ea1-386d3650d4ae2014-08-22T12:16:58-06:00<p>Agreed. I have ordered some and the three I measured register between 0.6V and 1V. I believe batteries degrade fastest when completely discharged so make sure to charge them soon after receiving.</p>
Customer #466261 on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) Customer #466261urn:uuid:ef1af9b7-7a4e-befd-b8cb-05bb3baadfe32014-02-10T17:09:03-07:00<p>Ordered two, one registers at .87V, the other at 1.3. These are not pre-charged. This should be noted in the product description.</p>
PocketBrain on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) PocketBrainurn:uuid:1eeb4112-cd46-7170-a2bb-66aa6021b3e32013-11-30T12:52:24-07:00<p>Agree, it's spot-welded on; that doesn't prevent you from very carefully trimming the leads, though.</p>
jma89 on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) jma89urn:uuid:23e4da16-09fc-607c-c2a3-d0488a7942472013-11-15T11:35:04-07:00<p>It looks to me like they are spot-welded on. If removal for charging is a concern then perhaps you could solder a <a href="https://www.sparkfun.com/products/9914" rel="nofollow">pigtail</a> to the battery and use that for connecting to your circuit. (Or just bare wires with spring terminals - Those are probably easier to solder.)<p>Alternate option: Solder the battery in place, but put a .1" jumper or DPST switch on the feed and leave a jack to connect the charger - Just switch the jumper or switch and voila! Charging without back-feeding your circuit.</p></p>
microtherion on PRT-12624 - Coin Cell Battery - 24.5mm (PTH LIR2477) microtherionurn:uuid:d52948b3-1631-850b-f11e-3ae29f9a0a2c2013-11-15T10:26:52-07:00<p>Can the coin cell be removed from the holder? If not, one would have to integrate a charging facility in one’s design, and that’s presumably close to impossible to do with through hole components, so to use this successfully in a design, it would take considerably more than “rookie” soldering and prototyping skills.</p>